ipack/devices/ipoctal: remove redundant tty_flip_buffer_push()

The function is already called in ipoctal_irq_rx()
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/ipack/devices/ipoctal.c

@@ -216,7 +216,6 @@ static void ipoctal_irq_channel(struct ipoctal_channel *channel)
 	if ((isr & channel->isr_tx_rdy_mask) && (sr & SR_TX_READY))
 		ipoctal_irq_tx(channel);
 
-	tty_flip_buffer_push(tty);
 	tty_kref_put(tty);
 	spin_unlock(&channel->lock);
 }